Window-sash lock.



J. T. WALL;

WINDOW SASH 'LOCK. APPLICATION men FEB. 27. 1915.

1,1 58,599. Patented Nov. 2, 1915.

COLUMBIA FLANOORAPH co., WASHINGTON D c and efi'ectually lock the windows STA wINDow-sAsH 1.001;.

Specification of Letters Patent.

Patented Nov. 2, 1915.

Application filed February 2'7, 1915. Serial No. 11,106.

To all whom it may concern:

Be it known that I, JOSEPH THURWALD WALL, a citizen of the United States, and resident of St. Louis, Missouri, have invented certain new and useful Improvements in Window-Sash Locks, of which the following is a specification containing a full, clear, and exact description, reference be ing had to the accompanying drawings, forming a part hereof.

The objects of my invention are to construct a window sash lock which shall be compact, inexpensive, strong, easy to apply in their closed or open position.

With the above and other objects in view, my invention has relation to certain novel features of construction and operation, examples of which are described in the following specification and illustrated in the accompanying drawings in which Figure 1 is a fragmented sectional plan view of a window with my locking device attached and shown in a locked position. Fig. 2 is a front elevation of the Window, with my locking device attached. Fig. 3 is a side elevation, the sash and window being shown in section, with my locking device attached. Fig. 4 is a perspective view of the two principal parts of my device.

1 and 2 designate conventional hinge leaves and 3 the securing screw holes.

4 and 5 designate the eye of one of the leaves with the center part removed; the lower face 6 of eye 4 is formedfiat and at right angles to the edge 7 with the exception that it has two rectangular notches 8 and 9 formed therein. Eye 5 has two similar rectangular notches 10 and 11 formed in its upper surface. Notch 10 of eye 5 and notch 8 of eye 4 are axially alined and notch 11 of eye 5 and notch 9 of eye 4 are axially alined. The notches are all of the same depths and widths. Notches 8 and 9 and projection 13 are present to make the leaves interchangeable. Leaf 2has an eye 12 with two projections 13 and 14 one on the upper surface of the eye and the other on the lower surface of the eye and axially alined and of the same dimensions. Projections 13 and 14 are of the same dimensions as notches 8 and 9, 10 and 11. The openings 15 and 17 in the eyes 4 and 5 are equal in diameter and of the same dimension as the opening 16 in the eye 12 of leaf 2.

l8 designates a pin or pintle having the same shaft diameter as the openings 15 and 17, etc., at the upper extremity of its shaft, a head 19 is formedintegral therewith.

20 designates a coil spring, having its inside coil diameter equal to the diameter of the pintle 18. When assembled for use the eye 12 of leaf 2 is placed so that its lower edge rests on the upper surface of eye 5, spring 20 is placed above eye 12, so that the lower coil rests on the upper surface of eye 12; pintle 18 is then dropped through eye 4, through the center of the coil spring 20 through eye 12 and through eye 5, thereby holding the spring in position and the two leaves in pivotal relationship with respect to each other, as illustrated in Figs. 2 and 3. The spring 20 is sufliciently compressed when in a normal position to keep the lower face of eye 12 adjacent the upper surface of eye 5.

Consider the leaf 1 to be held stationary; by rotating the leaf 2 on the pintle 18, it will be discerned that at certain times the projection 14 will engage the notch 11 and at other positions will engage the notch 10 thereby locking leaf 2 in this position relative to leaf 1 as far as rotation on pintle 18 is concerned. To unlock leaf 2 relative to leaf 1, a slight pressure upward compressing the spring slightly is required thereby disengaging projection 14 from either notches 10 or 11, when rotation on the pintle is again possible.

In using my device as a window lock it is applied as shown in Fig. 1. 21 indicates a conventional joint, 22 the upper sash, 23 the window, 24 the lower sash, 25 a plate with two holes, 26 for attachment to the top of the lower window sash, and having a bent arm 27 pivotally secured to the plate 25 at 28. Leaf 1 is secured to sash 22 as shown in Fig. 1. By the rotation of leaf 2 about pintle 18, it may be brought to the right angle position shown in Fig. 1 and there be locked by having the projection 14 engage a notch such as 10 or 11 at this point. The bent arm 27 having been rotated to the position shown in Fig. 2 passes through the lower aperture 3 in leaf 2. The two window sashes are now securely held in position with respect to each other and to the jamb. When the windows are to be opened leaf 2 is raised slightly thereby projection 14 disengages its companion notch and leaf 2 is moved to its normal position shown by the dotted line in Fig. 1. To permit of a slight Vertical movement of bent arm 27 in lower aperture 3, it must be made slightly longer in a vertical'direction.

What I claim and mean to secure by-Letters Patent is- 1. In a device of the character describeda hingefirmlysecured to the upper sash, said hinge having a protruding movable member and there being a hole in said movable member, a bent-arm pivotally secu'redto the lower sash in spaced -relationship 'Withthe movable member of 'said hinge, so that in certain positions of the movable portion of said hinge said bent arm may vpass through the hole in the movablesportion of said hinge. g

2. Ina device of the character described, a hinge firmly secured to the upper sash,

said hinge having a protruding movable member, a plate, a bent arm, said bent arm each other,-so that in certain positions of the movable portion o'fsaid hinge said bent arm may pass through the hole in the movable portion of said hinge a 111' testimony whereof, I have signed my! name tothis specification, in presence of 'tw'o subscribing Witnesses.

izrosrrn ,TQHURWAIJD WAL Witnesses:

V "-DRJJD;STO6KER,

Wan-an N. FrS'HER Copies o-t-h1spatent inay -be ofitaineiffor*five c'ents each by' addressi ng tlre Commissioner oflratnits,

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